America’s Blood Centers, AABB, and the American Red Cross submitted joint comments to the Centers for Medicaid and Medicare Services (CMS) regarding the Hospital Outpatient Prospective Payment and Ambulatory Surgical Center Payment Systems proposed rule for calendar year 2022. The comments focus on the Healthcare Common Procedure Coding System (HCPCS) codes P9099 (Blood component or product not otherwise classified) and P9100 (Pathogen(s) test for platelets).